diff --git a/takway/clients/web_socket_client_utils.py b/takway/clients/web_socket_client_utils.py
index 4acf1a3..d2ec943 100644
--- a/takway/clients/web_socket_client_utils.py
+++ b/takway/clients/web_socket_client_utils.py
@@ -203,6 +203,8 @@ class WebSocketClinet:
                 if self.sleep_event.is_set():
                     print(f"{datetime.now()}: sleep mode.")
                     recorder.hardware.long_power_status = False
+                    self.sleep_event.clear()
+                    break
                     
                 if not self.wakeup_event.is_set():
                     break